[Android] Fix warnings from deprecated observer extension

[Robert Stone]

vlc-android | branch: master | Robert Stone <rhstone at gmail.com> | Fri May 13 11:40:42 2022 -0700| [de1d10bef37b918ccfb632232749a36d41f82448] | committer: Robert Stone

Fix warnings from deprecated observer extension

Fixes #2468

> https://code.videolan.org/videolan/vlc-android/commit/de1d10bef37b918ccfb632232749a36d41f82448
---

 .../television/ui/MediaItemDetailsFragment.kt      | 20 ++++----
 .../src/org/videolan/vlc/MediaParsingService.kt    | 59 ++++++++++------------
 .../src/org/videolan/vlc/PlaybackService.kt        |  9 ++--
 .../src/org/videolan/vlc/gui/HistoryFragment.kt    |  3 +-
 .../src/org/videolan/vlc/gui/LibrariesActivity.kt  |  6 +--
 5 files changed, 47 insertions(+), 50 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/de1d10bef37b918ccfb632232749a36d41f82448